package com.weactivity.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArraySet;

@ServerEndpoint(value = "/websocket/{sid}" )
@Component
public class MyWebSocket {

    static Logger log= LoggerFactory.getLogger(MyWebSocket.class);
    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    private static int onlineCount = 0;
    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
    private static CopyOnWriteArraySet<MyWebSocket> webSocketSet = new CopyOnWriteArraySet<MyWebSocket>();

    //与某个客户端的连接会话，需要通过它来给客户端发送数据
    private Session session;
    //接收sid
    private String sid="";

    /**
     * 连接建立成功调用的方法*/
    @OnOpen
    public void onOpen(Session session,@PathParam("sid") String sid) {
        //获取地址
        // String path = this.getClass().getProtectionDomain().getCodeSource().getLocation().getFile();
        //Properties prop = new Properties();
//        try {
//            //装载配置文件
//            //prop.load(new FileInputStream(new File("src/main/resources/application.properties")));
//            //prop.load(new FileInputStream(new File(path+"/"+"application.properties")));
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
        //返回获取的值
        // String req_addr = prop.getProperty("req_addr");
        String token = "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJjbGFpbXMiOnsiaWNvbiI6IiIsImlkIjoxMSwidXNlck5hbWUiOiJzaHgxMjMifSwiZXhwIjoxNzE4MTQwNjM5fQ.zqh9ytLUkHxfTzz_eM-VG-XUNdDg2Dg_nRSyP9i3cMA";

        RestTemplate restTemplate = new RestTemplate();
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();           //在线数加1
        log.info("有新窗口开始监听:"+sid+",当前在线人数为" + getOnlineCount());
        this.sid=sid;
        //请求头设置token
        String url = "http://127.0.0.1:8085/api/remind/test";
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.set("Authorization",token);
        HttpEntity<String> entity = new HttpEntity<>( httpHeaders);

        try {
            ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, entity, String.class);
            String result = response.getBody();
            System.out.println(result);
        } catch (Exception e) {
            e.printStackTrace();
        }


//        try {
//            String reslut = restTemplate.postForObject("http://127.0.0.1:8085/api/remind/test",sid,String.class);
//            sendMessage(reslut);
//            System.out.println("连接成功");
//        } catch (IOException e) {
//            log.error("websocket IO异常");
//        }
    }


    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose() {
        webSocketSet.remove(this);  //从set中删除
        subOnlineCount();           //在线数减1
        log.info("有一连接关闭！当前在线人数为" + getOnlineCount());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param message 客户端发送过来的消息*/
    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("收到来自窗口"+sid+"的信息:"+message);
        //群发消息
        for (MyWebSocket item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     *
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        log.error("发生错误");
        error.printStackTrace();
    }
    /**
     * 实现服务器主动推送
     */
    public void sendMessage(String message) throws IOException {

        this.session.getBasicRemote().sendText(message);
    }

    /**
     * 检查用户是否在线
     */
    public static boolean isUserOnline(String sid) {
        for (MyWebSocket item : webSocketSet) {
            if (item.sid.equals(sid)) {
                return true;
            }
        }
        return false;
    }


    /**
     * 群发自定义消息
     * */
    public static void sendInfo(String message,@PathParam("sid") String sid) throws IOException {
        log.info("推送消息到窗口"+sid+"，推送内容:"+message);
        for (MyWebSocket item : webSocketSet) {
            try {
                //这里可以设定只推送给这个sid的，为null则全部推送
                if(sid==null) {
                    item.sendMessage(message);
                }else if(item.sid.equals(sid)){
                    item.sendMessage(message);
                }
            } catch (IOException e) {
                continue;
            }
        }
    }

    public static void sendReminder(String sid, String message) {
        for (MyWebSocket item : webSocketSet) {
            if (item.sid.equals(sid)) {
                try {
                    item.sendMessage(message);
                } catch (IOException e) {
                    log.error("发送消息失败", e);
                }
            }
        }
    }


    public static synchronized int getOnlineCount() {
        return onlineCount;
    }

    public static synchronized void addOnlineCount() {
        MyWebSocket.onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        MyWebSocket.onlineCount--;
    }
}

